Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Net sales	$ 418.4	$ 359.6
Cost of sales	364.7	307.6
Gross profit	53.7	52.0
Selling, general and administrative expenses	45.8	39.7
Operating income	7.9	12.3
Other components of pension income and other postretirement benefits expense, net	2.8	2.4
Interest expense, net	(7.8)	(7.4)
Income before income taxes	2.9	7.3
Income tax benefit (expense)	3.4	(1.9)
Net income	6.3	5.4
Net (income) loss attributable to noncontrolling interests	(0.2)	0.1
Net income attributable to Park-Ohio Holdings Corp. common shareholders	$ 6.1	$ 5.5
Income per common share attributable to Park-Ohio Holdings Corp. common shareholders:
Basic (in dollars per share)	$ 0.51	$ 0.46
Diluted (in dollars per share)	$ 0.50	$ 0.45
Weighted-average shares used to compute income per share:
Basic (in shares)	12.0	12.0
Diluted (in shares)	12.2	12.3